Solar panel



FIG. 1 is a bottom, front, right perspective view of a solar panel, showing the new design;

FIG. 2 is a lower, rear, right perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof. 

CLAIM The ornamental design for a solar panel, as shown and described. 